How can a 911 3.4 have so much more HP than a 3.2 Boxster S?

[The Radium King]

here's a thread;

http://986forum.com/forums/general-discussions/34205-cayman-s-exhaust-boxster.html

there's some misinformation in there, but berty and todd holyoak have the facts - it will fit, it is lighter, it requires that the whole system (headers, mid-pipes and manifold) be changed, it may require extending your post-cat o2 sensor wires, and go for a take-off from a 987/987c 's' model. it sounds better and should be good for a few hp (hey, 10 lbs = 1 hp, right?).

[JAAY]

Good headers, high flow cats even a stock muffler and you will be doing great. Finish it up with a 987 airbox, I feel that there is a lot to be had by this mod. IPD plenum is a nice little perk too. Get a good tune and you'll be in 3.4 numbers.

[gj3ny]

Pedros Garage indicates that these changes will give you 31 more horse. Who knows? It will cost you $1400 to find out but may be worth it.

http://pedrosgarage.com/Site_2/TechnoPower2_Kit.html